// @allowUnreachableCode: true
// FunctionExpression with no return type annotation and no return statement returns void
var v = function() {
}();
// FunctionExpression f with no return type annotation and directly references f in its body returns any
var a = function f() {
    return f;
};
var a = function f() {
    return f();
};
// FunctionExpression f with no return type annotation and indirectly references f in its body returns any
var a = function f() {
    var x = f;
    return x;
};
// Two mutually recursive function implementations with no return type annotations
function rec1() {
    return rec2();
}
function rec2() {
    return rec1();
}
var a = rec1();
var a = rec2();
// Two mutually recursive function implementations with return type annotation in one
function rec3() {
    return rec4();
}
function rec4() {
    return rec3();
}
var n1;
var n1 = rec3();
var n1 = rec4();
// FunctionExpression with no return type annotation and returns a number
var n1 = function() {
    return 3;
}();
// FunctionExpression with no return type annotation and returns null
var nu = null;
var nu = function() {
    return null;
}();
// FunctionExpression with no return type annotation and returns undefined
var un = undefined;
var un = function() {
    return undefined;
}();
// FunctionExpression with no return type annotation and returns a type parameter type
var n1 = function(x) {
    return x;
}(4);
// FunctionExpression with no return type annotation and returns a constrained type parameter type
var n1 = function(x) {
    return x;
}(4);
// FunctionExpression with no return type annotation with multiple return statements with identical types
var n1 = function() {
    return 3;
    return 5;
}();
// Otherwise, the inferred return type is the first of the types of the return statement expressions
// in the function body that is a supertype of each of the others, 
// ignoring return statements with no expressions.
// A compile - time error occurs if no return statement expression has a type that is a supertype of each of the others.
// FunctionExpression with no return type annotation with multiple return statements with subtype relation between returns
class Base {
}
class Derived extends Base {
}
var b;
var b = function() {
    return new Base();
    return new Derived();
}();
// FunctionExpression with no return type annotation with multiple return statements with one a recursive call
var a = function f() {
    return new Base();
    return new Derived();
    return f(); // ?
}();
// FunctionExpression with non -void return type annotation with a single throw statement
undefined === function() {
    throw undefined;
};
// Type of 'this' in function implementation is 'any'
function thisFunc() {
    var x = this;
    var x;
}
// Function signature with optional parameter, no type annotation and initializer has initializer's type
function opt1(n = 4) {
    var m = n;
    var m;
}
// Function signature with optional parameter, no type annotation and initializer has initializer's widened type
function opt2(n = {
    x: null,
    y: undefined
}) {
    var m = n;
    var m;
}
// Function signature with initializer referencing other parameter to the left
function opt3(n, m = n) {
    var y = m;
    var y;
}
// Function signature with optional parameter has correct codegen 
// (tested above)
// FunctionExpression with non -void return type annotation return with no expression
function f6() {
    return;
}
class Derived2 extends Base {
}
class AnotherClass {
}
// if f is a contextually typed function expression, the inferred return type is the union type
// of the types of the return statement expressions in the function body, 
// ignoring return statements with no expressions.
var f7 = (x)=>{
    if (x < 0) {
        return x;
    }
    return x.toString();
};
var f8 = (x)=>{
    return new Base();
    return new Derived2();
};
var f9 = (x)=>{
    return new Base();
    return new Derived();
    return new Derived2();
};
var f10 = (x)=>{
    return new Derived();
    return new Derived2();
};
var f11 = (x)=>{
    return new Base();
    return new AnotherClass();
};
var f12 = (x)=>{
    return new Base();
    return; // should be ignored
    return new AnotherClass();
};
